What are best practices for use of the 'Avg', 'Min', 'Max' and 'Stdv' Polling Results? (NETIQKB43803)

  • 7743803
  • 02-Feb-2007
  • 09-Dec-2010

Environment

NetIQ AppManager 6.x
NetIQ AppManager 7.0.x
NetIQ SNMP Generic Toolkit 1.0

Situation

What are best practices for use of the 'Avg', 'Min', 'Max' and 'Stdv' Polling Results?

Resolution

The SyncPoll and SyncPollTable Knowledge Scripts poll SNMP Values at fixed time intervals for the specified number of attempts. These Scripts do not report the individual values retrieved at each interval. Rather, they calculate the Average, Minimum, Maximum and Standard Deviation across all the polled values. 

With the Polling Calculation Type? parameter, the user is allowed to select which of the four values will serve as Collected Data for the Knowledge Script (KS). At least 2 polling attempts must succeed for any results to be calculated.

In general, each calculation type will provide a different flavor of information:

  • Average ? Use with longer polling intervals to get a sense of how much of a resource is being used on the average over longer time periods.
  • Minimum ? Use at short polling intervals to detect if a resource or value is ever falling below a specified threshold.
  • Maximum ? Use at short polling intervals to detect if a resource or value is ever exceeding a specified threshold.
  • Standard Deviation ? Use with short polling intervals to measure fluctuations or oscillations in use of a resource. The higher the Standard Deviation, the more the resource usage is fluctuating.

Additional Information

Formerly known as NETIQKB43803

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